[dart:io] Namespaces for file IO

runtime/bin/directory.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_BIN_DIRECTORY_H_
 #define RUNTIME_BIN_DIRECTORY_H_
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
+#include "bin/namespace.h"
 #include "bin/reference_counting.h"
 #include "bin/thread.h"
 #include "platform/globals.h"
 
 namespace dart {
 namespace bin {
 
 enum ListType {
   kListFile = 0,
   kListDirectory = 1,
@@ skipping 35 matching lines @@
 // directory listing. By using DirectoryListingEntry as stack elements, a
 // directory listing can be paused e.g. when a buffer is full, and resumed
 // later on.
 //
 // The stack is managed by the DirectoryListing's PathBuffer. Each
 // DirectoryListingEntry stored a entry-length, that it'll reset the PathBuffer
 // to on each call to Next.
 class DirectoryListingEntry {
  public:
   explicit DirectoryListingEntry(DirectoryListingEntry* parent)
-      : parent_(parent), lister_(0), done_(false), link_(NULL) {}
+      : parent_(parent),
+        fd_(-1),
+        lister_(0),
+        done_(false),
+        link_(NULL) {}
 
   ~DirectoryListingEntry();
 
   ListType Next(DirectoryListing* listing);
 
   DirectoryListingEntry* parent() const { return parent_; }
 
   LinkList* link() { return link_; }
 
   void set_link(LinkList* link) { link_ = link; }
 
   void ResetLink();
 
  private:
   DirectoryListingEntry* parent_;
+  intptr_t fd_;
   intptr_t lister_;
   bool done_;
   int path_length_;
   LinkList* link_;
 
   DISALLOW_COPY_AND_ASSIGN(DirectoryListingEntry);
 };
 
 class DirectoryListing {
  public:
-  DirectoryListing(const char* dir_name, bool recursive, bool follow_links)
-      : top_(NULL),
+  DirectoryListing(Namespace* namespc,
+                   const char* dir_name,
+                   bool recursive,
+                   bool follow_links)
+      : namespc_(namespc),
+        top_(NULL),
         error_(false),
         recursive_(recursive),
         follow_links_(follow_links) {
     if (!path_buffer_.Add(dir_name)) {
       error_ = true;
     }
     Push(new DirectoryListingEntry(NULL));
   }
 
   virtual ~DirectoryListing() { PopAll(); }
@@ skipping 14 matching lines @@
   }
 
   bool IsEmpty() const { return top_ == NULL; }
 
   void PopAll() {
     while (!IsEmpty()) {
       Pop();
     }
   }
 
+  Namespace* namespc() const { return namespc_; }
+
   DirectoryListingEntry* top() const { return top_; }
 
   bool recursive() const { return recursive_; }
 
   bool follow_links() const { return follow_links_; }
 
   const char* CurrentPath() { return path_buffer_.AsScopedString(); }
 
   PathBuffer& path_buffer() { return path_buffer_; }
 
   bool error() const { return error_; }
 
  private:
   PathBuffer path_buffer_;
+  Namespace* namespc_;
   DirectoryListingEntry* top_;
   bool error_;
   bool recursive_;
   bool follow_links_;
 };
 
 class AsyncDirectoryListing : public ReferenceCounted<AsyncDirectoryListing>,
                               public DirectoryListing {
  public:
   enum Response {
     kListFile = 0,
     kListDirectory = 1,
     kListLink = 2,
     kListError = 3,
     kListDone = 4
   };
 
-  AsyncDirectoryListing(const char* dir_name, bool recursive, bool follow_links)
+  AsyncDirectoryListing(Namespace* namespc,
+                        const char* dir_name,
+                        bool recursive,
+                        bool follow_links)
       : ReferenceCounted(),
-        DirectoryListing(dir_name, recursive, follow_links),
+        DirectoryListing(namespc, dir_name, recursive, follow_links),
         array_(NULL),
         index_(0),
         length_(0) {}
 
   virtual bool HandleDirectory(const char* dir_name);
   virtual bool HandleFile(const char* file_name);
   virtual bool HandleLink(const char* file_name);
   virtual bool HandleError();
   virtual void HandleDone();
 
@@ skipping 13 matching lines @@
   intptr_t index_;
   intptr_t length_;
 
   friend class ReferenceCounted<AsyncDirectoryListing>;
   DISALLOW_IMPLICIT_CONSTRUCTORS(AsyncDirectoryListing);
 };
 
 class SyncDirectoryListing : public DirectoryListing {
  public:
   SyncDirectoryListing(Dart_Handle results,
+                       Namespace* namespc,
                        const char* dir_name,
                        bool recursive,
                        bool follow_links)
-      : DirectoryListing(dir_name, recursive, follow_links),
+      : DirectoryListing(namespc, dir_name, recursive, follow_links),
         results_(results),
         dart_error_(Dart_Null()) {
     add_string_ = DartUtils::NewString("add");
     directory_type_ = DartUtils::GetDartType(DartUtils::kIOLibURL, "Directory");
     file_type_ = DartUtils::GetDartType(DartUtils::kIOLibURL, "File");
     link_type_ = DartUtils::GetDartType(DartUtils::kIOLibURL, "Link");
   }
   virtual ~SyncDirectoryListing() {}
   virtual bool HandleDirectory(const char* dir_name);
   virtual bool HandleFile(const char* file_name);
@@ skipping 12 matching lines @@
 
   DISALLOW_ALLOCATION()
   DISALLOW_IMPLICIT_CONSTRUCTORS(SyncDirectoryListing);
 };
 
 class Directory {
  public:
   enum ExistsResult { UNKNOWN, EXISTS, DOES_NOT_EXIST };
 
   static void List(DirectoryListing* listing);
-  static ExistsResult Exists(const char* path);
+  static ExistsResult Exists(Namespace* namespc, const char* path);
 
   // Returns the current working directory. The caller must call
   // free() on the result.
   static char* CurrentNoScope();
 
   // Returns the current working directory. The returned string is allocated
   // with Dart_ScopeAllocate(). It lasts only as long as the current API scope.
-  static const char* Current();
-  static const char* SystemTemp();
-  static const char* CreateTemp(const char* path);
+  static const char* Current(Namespace* namespc);
+  static const char* SystemTemp(Namespace* namespc);
+  static const char* CreateTemp(Namespace* namespc, const char* path);
   // Set the system temporary directory.
   static void SetSystemTemp(const char* path);
-  static bool SetCurrent(const char* path);
-  static bool Create(const char* path);
-  static bool Delete(const char* path, bool recursive);
-  static bool Rename(const char* path, const char* new_path);
+  static bool SetCurrent(Namespace* namespc, const char* path);
+  static bool Create(Namespace* namespc, const char* path);
+  static bool Delete(Namespace* namespc, const char* path, bool recursive);
+  static bool Rename(
+      Namespace* namespc, const char* path, const char* new_path);
 
   static CObject* CreateRequest(const CObjectArray& request);
   static CObject* DeleteRequest(const CObjectArray& request);
   static CObject* ExistsRequest(const CObjectArray& request);
   static CObject* CreateTempRequest(const CObjectArray& request);
   static CObject* CreateSystemTempRequest(const CObjectArray& request);
   static CObject* ListStartRequest(const CObjectArray& request);
   static CObject* ListNextRequest(const CObjectArray& request);
   static CObject* ListStopRequest(const CObjectArray& request);
   static CObject* RenameRequest(const CObjectArray& request);
 
  private:
   static char* system_temp_path_override_;
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(Directory);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // RUNTIME_BIN_DIRECTORY_H_